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    • 1. 发明授权
    • Pump device for high pressure fuel delivery in fuel injection system of
internal combustion engines
    • 用于内燃机燃油喷射系统中高压燃料输送的泵装置
    • US6126407A
    • 2000-10-03
    • US284773
    • 1999-05-28
    • Josef GuentertBernd StreicherUwe KuhnJuergen HammerThomas Lettner
    • Josef GuentertBernd StreicherUwe KuhnJuergen HammerThomas Lettner
    • F02M37/06F02M39/00F02M59/06F02M59/44F04B23/10H05B1/00H05B3/02
    • F04B23/103F02M39/005
    • The invention relates to a pump device for high-pressure fuel delivery in fuel injection systems of internal combustion engines, in particular in a common rail injection system, including a radial piston pump (2, 68, 80) with a drive shaft (38, 74, 114) that is supported in a pump housing (14) and is embodied eccentrically or has cam-like projections in the circumference direction, preferably with a number of pistons that are each disposed in a cylinder chamber radially in relation to the drive shaft and can be driven to reciprocate in the cylinder chamber when the drive shaft rotates, and with a check valve on the intake side and the high pressure side, and a low pressure pump (4, 71, 82) connected before the radial piston pump; in order to improve the pump device in such a way that it is more compact and can be produced more cheaply and the danger of the occurrence of leaks is reduced, the low pressure pump (4, 71, 82) is provided on or in the pump housing (14) of the radial piston pump (2, 68, 80), on the end remote from the drive end (10), and can be driven by the drive shaft (38, 74, 114) of the radial piston pump. (FIG. 1b)
    • PCT No.PCT / DE98 / 01919 Sec。 371日期1999年5月28日 102(e)日期1999年5月28日PCT提交1998年7月9日PCT公布。 公开号WO99 /​​ 09316 日期1999年2月25日本发明涉及一种用于内燃机的燃料喷射系统中的高压燃料输送的泵装置,特别是在共轨喷射系统中,包括径向活塞泵(2,88,80),其具有 驱动轴(38,74,114),其被支撑在泵壳体(14)中,并且在圆周方向上偏心地设置或具有凸轮状突起,优选地,多个活塞各自以径向位于气缸室中 与驱动轴相关联,并且可以在驱动轴旋转时被驱动以在气缸室中往复运动,并且在进气侧和高压侧具有止回阀,并且在低压泵(4,71,82)之前连接的低压泵 径向活塞泵; 为了改善泵装置,使得其更紧凑并且可以更便宜地生产并且泄漏发生的危险降低,低压泵(4,71,82)设置在或 径向柱塞泵(2,68,80)的泵壳体(14)在远离驱动端(10)的一端上,并且可以由径向柱塞泵(38,64)的驱动轴(38,74,114)驱动 。 (图1b)
    • 5. 发明授权
    • Fuel injection system for an internal combustion engine
    • 内燃机燃油喷射系统
    • US06848423B2
    • 2005-02-01
    • US10251877
    • 2002-09-23
    • Matthias SchmidlThomas LettnerRobert Reitsam
    • Matthias SchmidlThomas LettnerRobert Reitsam
    • F02M37/00F04B23/04F04B49/22F02M37/04
    • F04B23/04F04B49/225
    • A fuel injection system having a fuel reservoir, a high-pressure fuel pump by which fuel is pumped into the fuel reservoir as a function of engine operating parameters, a prefeed pump by which fuel is pumped from a fuel tank to the intake side of the high-pressure fuel pump, a fuel metering device for adjusting the fuel quantity pumped into the fuel reservoir by the high-pressure fuel pump, and at least one injector, communicating with the fuel reservoir, for fuel injection to the engine. The metering device is disposed between the fuel tank and the intake side of the prefeed pump. The high-pressure fuel pump has a drive region, which for the sake of its lubrication can be made to communicate with the outlet of the prefeed pump, via a pressure valve that opens towards the drive region.
    • 一种具有燃料储存器的燃料喷射系统,作为发动机运行参数的函数将燃料泵入燃料储存器的高压燃料泵,将来自燃料箱的燃料从燃料箱泵送到燃料箱的进气侧的预供给泵 高压燃料泵,用于调节通过高压燃料泵泵入燃料容器的燃料量的燃料计量装置,以及与燃料箱连通的至少一个喷射器,用于向发动机喷射燃料。 计量装置设置在燃料箱和预制泵的进气侧之间。 高压燃料泵具有驱动区域,为了润滑,可以通过向驱动区域打开的压力阀使其与预制泵的出口连通。